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Video: Transfer System For A Modular Small Parts Assembly System
The modular automation platform Cresa-Line from Credimex AG from Alpnach in Switzerland consists of intelligent process stations and thus, according to Roger Schelbert, co-owner of Credimex and Head of Movement Technology, meets the requirements for production processes in accordance with Industry 4.0: "The modularity of the machine gives us the opportunity to produce different products efficiently. The big advantage is that difficult and complex processes that previously had to be carried out manually can be automated. A wide variety of process stations from the standard range are available for the Cresa-Line. Handling and pick-and-place processes as well as assembly and test stations can be integrated as required. These stations are connected by Beckhoff's XTS.On its movers, 250 mm long and maximum 70 to 90 mm wide workpiece carriers are mounted, on which large or several small products can be processed. This makes the system very flexible and interesting. B. for the watch and electronics industry, motor production and medical technology. It is particularly advantageous that, on the one hand, batch size 1 can be produced and, on the other hand, it can be converted very quickly to new products. "that on the one hand it can be produced in batch size 1 and on the other hand it can be converted very quickly to new products. "that on the one hand it can be produced in batch size 1 and on the other hand it can be converted very quickly to new products."
Flexibility in functionality and structure
In addition to parts handling, the process stations include the areas of joining by gluing or welding, laser triangulation for product detection and image processing for quality assurance. Depending on requirements, additional, customer-specific stations can be added, which - according to Roger Schelbert - makes one of the main advantages of PC-based control technology from Beckhoff clear: "PC Control with its variety of interfaces and openness as well as XTS with its flexible movement functions offer an optimal platform, to be able to integrate any components or additional stations. With Twin-CAT, for example, robotics integration is very easy. A wide range of components, powerful EtherCAT communication and, with TwinSAFE, system-integrated safety technology are also available.”
Picture gallery with 5 pictures
The extended transport system of the current cresa line system, consisting of eight stations, is made up of nine 250 mm long, linear motor modules. Nine 250 mm movers move thereon as workpiece carriers. With the Cresa-Line starter, the whole thing is reduced to half the size of the Cresa-Line, with the same approach. This shows that XTS not only provides enormous flexibility in motion control by replacing mechanical components, but also by means of software functionality. Added to this is the good adaptability to the user needs with regard to the system configuration: The application-specific movers use the magnetic plate and the encoder system from XTS on the one hand and a customer-specific guide rail on the other.
Linear design implemented
In this case, Credimex also implemented a linear, rather than a closed, XTS design. Roger Schelbert explains: “The special feature is that the movers on the Cresa-Line starter are lowered at the end of the XTS section and returned to the beginning using a 3-axis linear system. In the large cresa line, the movers are moved to the opposite XTS transfer rail using a cross transfer system. The return path is also used for assembly sites. In this way we were able to design a very compact system and thus meet the market demands for rather small assembly lines."
According to Roger Schelbert, an expansion of the compact system design is possible without any problems: “Thanks to the modularity in hardware and software, XTS can also be used to implement other machine layouts with little effort - through simple configuration. For example, the mover return under the processing table can be replaced by a cross transfer or via a closed XTS system in order to integrate additional assembly or processing stations on the way back.”
Content of the article:
- Page 1: Transfer system for a modular small parts assembly system
- Page 2: Software functionality replaces hardware expenditure
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